Coal-saving attachment for furnaces



Feb. 14, 1928.

J. T. BROWN COAL SAVING ATTACHMENT FOR FURNACES Filed June 22, 1925ATTORNEY R O N E V m Patented Feb. 14, 1928.

JOHN '1. BROWN; or nnoonrnnaw YORK; I

COAL-SAVING n'rmcnmnum non. FURNACES.

A ncauoa'nieeaun ae, 1925. Serial 1%. 38,839..

This invention relates to improvements in furnaces, particularlyapartment house furnaces, or the like, and it is the principal object ofthe invention to provide a so'called self-feeder, in which the coalprovides a gastight closure or seal, thus avoidin -a11 (lan ger ofasphyxiation especially by the gas es caping during the feeding of thefurnace.

Another object of the'invention isthe provision of a coal feedermagazine which is kept filled and from which the coal is automaticallyfed to the grate.

A further object of the invention is the provision of anair-tight coalseal for furnaces, preventing the draught from driving the coal gas intothe feeder, thus avoiding all danger connected with the, feedingof thefurnace. I

A still further object of the invention is, j the provision ofa furnacewith a coal magazine and adjustable chute connected therewith forfeeding-the coal to the grate and for pro'vidinga gas-tight seal by thefalling or feed coal itself.

These and other objects and advantages of my invention will become morefully apparent as the description thereof proceeds, and will thenbe morespecifically defined in the appended claims.

In the accompanying drawingforming amaterial part of this disclosure:

Fig. 1 is a front elevation of a furnace with a portion thereof brokenaway disclosing certain interior parts of the furnace, and having a coalmagazine,constructed according to the invention, mounted therein.

Fig. 2 is a detail view of a chute. Fig. 3 is a detail side elevationthereof, 11-

v lustrating the adjustability of the chute.

Fig. i is a sectional detail View ofa modification of the chute.

The furnace 10 has mounted therein, a coal magazine 11 for the receptionof the coal 12, and equipped with a cover 13 hinged to the front of thefurnace, and a chute 14 through which the coal is fed from the magazine11 to the grate 15. The chute 14 has a lining 16 of fire clay, and upperconverging sides 17 preferably also lined with fire-proof material 16.These sides are adapted to be bolted to the chute 14, as indicated at18, or secured thereto in any ap-. propriate manner. A plurality ofopenings 19 in the sides 17 engageable by bolts to the chute, permit anadjustment of these sides within certain limits, to better accommodatethe interior of the furnace.

In Fig. 4 a modified form of chute'20 is" illustrated having the wallsofits body held together or braced by means of the turnbucklearrangement 21while the upper converging sides 22 are made integrallywith a the chute and a strengthening rib 23 is pro vided at the point ofjunction between the sides and chute and the ends of thestrengthennlg'ribs 2&- permit o-fsuitably supporting the chute tothefurnace 10 to hold it in place against displacement, The chute 20comprises an upper "hopper provided by them: verging walls 22 and alower adjustable discharge nozzle comprising the spaced side and endWalls 25 and 26 respectively. Each side wall 25 of the nozzle portion isprovided with an end wall section 26 which is disposed substantially atright angles to the plane of the sidewalls 25. The end wall sections ofone side member 25 are positioned in telescoping relation to the endwallsections of the other side member as illustrated in Fig. 4 and theseside members are retained in spaced relation by the fuel as it passesthrough the passage formed by the sides 25 and the ends 26 and by theturnbuckle. When it is desired to reduce the size of this passage theside elements 25 may be drawn closer together by adjustment of the turnbuckles.

A door 24. at the front of the furnace allows the removal ofthe ashes,etc, and cleaning doors 25,0'1' inspection and draught regulz'itiondoorsmay bearranged as shown, in any desired and required manner.

It will be clear that if the magazine is filled with coal the same willproduce an air-tight seal because the coal will be fed successively tothe grate and will not burn before it reaches the same under its ownweight. The weight of the coal will pack the same tightly andprevent thegas from escaping from the furnace, otherwise than through the finesprovided for this purpose.

The coal will be gradually consumed and the burnt coal will make roomfor more coal falling through the chute. Thus any danger ofasphyxiation'by gas entering the magazine during the feeding operationis positively avoided and the coal may be fed at any time withoutdanger.

It is to be understood that such changes in the construction of thefurnace as come within the scope of the appended claims, withoutdeparture from the spirit of the invention and the principle involved.

Having thus described my invention, what ll claim as new, and desire tosecure by Letters Patent, is:

1. In a device of the class described, a fuel hopper comprisingconverging sides, a fuel 'dlscharge nozzle comprising substantiallyvertical sides made integral with the converging sides of said hopper,end sections 7 on said vertical sides substantially perpendicular to theplane thereof, the end sections of one of said sides being positioned intelescoping relation to the end sections ofthe other side of saidnozzle, and means comprising turnbuckles secured at their extremitiesfor retaining said sides at a predetermined distance apart.

2. In a device of the class described, a fuel feeder comprising an upperhopper having converging sides, a lower discharge nozzle comprisingsubstantially vertical sides integral with the converging sides of saidfuel hopper, end flanges on the extremities of the sides of said nozzledisposed substantially at right angles thereto, the end flanges of oneof said sides being positioned in telescoping relation to the endflanges of the other side of said nozzle, and adjustable meanscomprising a turnbuckle for varying the distance between said sides forsuitably.

ing a turnbuckle for predetermining the distance between said sides forvarying the size of the passage therebetween. I

In testimony whereof Ihave affixed my signature. 1 r a I JOHN T. BROWN.

